[Insight-users] derivativeImageFilter

[john smith]

Hi,

I made thechanges and  when I run it from the command line window I get a
message which is says that png supports unsigned char and unsigned short.
But when I make these changes I get failures in the building of the project:
*error C2440: 'initializing' : cannot convert from
'itk::Concept::Detail::UniqueType_bool<__formal>' to
'itk::Concept::Detail::UniqueType_bool<__formal>'. *Could somebody help me
with this?

Thanks in advance


2011/3/15 robert tamburo <robert.tamburo at gmail.com>

> Take a look at your writerType typedef.
>
>
> On Tue, Mar 15, 2011 at 9:49 AM, john smith <mkitkinsightuser at gmail.com>wrote:
>
>> Hi to everyone,
>>
>> I want to read an image and use a derivative image filter.I wrote the
>> following code, but when I get a failure because I thonk that the types of
>> reader,writer and derivative image filter do not match each other.Could
>> somebody help me?
>>
>> Thanks in advance
>>
>> ================DerivativeImageFilter.cxx==========================
>> #include "itkImage.h"
>> #include "itkImageFileReader.h"
>> #include "itkImageFileWriter.h"
>> #include "itkDerivativeImageFilter.h"
>>
>>
>>
>> int main(int argc, char * argv[])
>> {
>>   // Verify command line arguments
>>   if( argc < 2 )
>>     {
>>     std::cerr << "Usage: " << std::endl;
>>     std::cerr << argv[0] << " inputImageFile" << std::endl;
>>     return EXIT_FAILURE;
>>     }
>>
>>   // Parse command line arguments
>>   std::string inputFilename = argv[1];
>>
>>   // Setup types
>>   typedef itk::Image< float,  2 >        FloatImageType;
>>   typedef itk::Image< unsigned char, 2 > UnsignedCharImageType;
>>
>>   typedef itk::ImageFileReader< UnsignedCharImageType >  readerType;
>>   typedef itk::ImageFileReader< UnsignedCharImageType >  writerType;
>>
>>   typedef itk::DerivativeImageFilter<
>>           UnsignedCharImageType, FloatImageType >  filterType;
>>
>>   // Create and setup a reader
>>   readerType::Pointer reader = readerType::New();
>>   reader->SetFileName( inputFilename.c_str() );
>>
>>   // Create and setup a derivative filter
>>   filterType::Pointer derivativeFilter = filterType::New();
>>   derivativeFilter->SetInput( reader->GetOutput() );
>>   derivativeFilter->SetDirection(0); // "x" axis
>>
>>    typedef  itk::ImageFileWriter< writerType  > WriterType;
>>   WriterType::Pointer writer = WriterType::New();
>>   writer->SetFileName("result.png");
>>   writer->SetInput(derivativeFilter->GetOutput());
>>
>>       try
>>     {
>>     writer->Update();
>>     }
>>     catch( itk::ExceptionObject exp )
>>     {
>>     std::cerr << "Exception caught !" << std::endl;
>>     std::cerr << exp << std::endl;
>>     }
>>
>>   return EXIT_SUCCESS;
>> }
>>
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